JIANG Jin-shuo, LI Rong-jian, LIU Jun-ding, WANG Lei, GUO Qiang, ZOU Ze-lin. Stress and displacement of surrounding rock of loess tunnels based on joint strength[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 189-192. DOI: 10.11779/CJGE2019S2048
    Citation: JIANG Jin-shuo, LI Rong-jian, LIU Jun-ding, WANG Lei, GUO Qiang, ZOU Ze-lin. Stress and displacement of surrounding rock of loess tunnels based on joint strength[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 189-192. DOI: 10.11779/CJGE2019S2048

    Stress and displacement of surrounding rock of loess tunnels based on joint strength

    More Information
    • Received Date: April 28, 2019
    • Published Date: July 19, 2019
    • The stress and displacement of surrounding rock of tunnels are one of the traditional research subjects in the tunnel engineering. However the impact of tensile strength on stress and displacement of the surrounding rock of structured loess tunnels needs to be evaluated reasonably. Based on the theory of joint strength considering the tensile and shear properties of loess simultaneously, the principal stress expression for the strength failure curve is re-determined to analyze the ultimate stress equilibrium. Then, the radius of the plastic zone of the surrounding rock of loess under the axisymmetric circular tunnel is re-determined. Finally, the expression of the displacement for the surrounding rock around the tunnel is obtained. The results show that the plastic stress in the surrounding rock determined by the joint strength theory is smaller than that determined by the traditional Mohr-Coulomb theory, and the radius of the plastic zone and the displacement of the surrounding rock around the tunnel are relatively large. The joint strength theory based on tensile strength overcomes the defect of Mohr-Coulomb theory overestimating the tensile strength of loess, and it can reasonably evaluate stress and displacement of the surrounding rock.
    • [1]
      赵彭年. 松散介质力学[M]. 北京: 地震出版社.
      (ZHAO Peng-nian.Mechanics of loose medium[M]. Beijing. Earthquake Press. (in Chinese))
      [2]
      NOVA R, GABRIELI L.Soil mechanics[M]. New York: Wiley-Iste, 2010.
      [3]
      罗固源. 岩石力学[M]. 重庆: 重庆大学出版社.
      (LUO Gu-yuan.Rock mechanics[M]. Chongqing: University Press. (in Chinese))
      [4]
      侯公羽, 牛晓松. 基于Levy-Mises本构关系及D-P屈服准则的轴对称圆巷理想弹塑性解[J]. 岩土力学, 2009, 30(6): 1555-1562.
      (HOU Gong-yu, NIU Xiao-song, et al.Perfect elastoplastic solution of axisymmetric circular openings in rock mass based on Levy-Mises constitutive relation and D-P yield criterion[J]. Rock and Soil Mechanics, 2009, 30(6): 1555-1562. (in Chinese))
      [5]
      张强, 王红英, 王水林, 等. 基于统一强度理论的破裂围岩劣化弹塑性分析[J]. 煤炭学报, 2010, 35(3): 381-386.
      (ZHANG Qiang, WANG Hong-ying, WANG Shui-lin, et al.Deterioration elsto-plastic analysis of cracked surrounding rocks based on unified strength theory[J]. Journal of China Coal Society, 2010, 35(3): 381-386. (in Chinese))
      [6]
      曾开华, 鞠海燕, 盛国君, 等. 巷道围岩弹塑性解析解及工程应用[J]. 煤炭学报, 2011, 36(5): 752-755.
      (ZENG Kai-hua, JU Hai-yan, SHENG Guo-jun, et al.Elastic-plastic analytical solutions for surrounding rocks of tunnels and its engineering applications[J]. Journal of China Coal Society, 2011, 36(5): 752-755. (in Chinese))
      [7]
      张常光, 张庆贺, 赵均海. 考虑应变软化、剪胀和渗流的水工隧道解析解[J]. 岩土工程学报, 2009, 31(12): 1941-1946.
      (ZHANG Chang-guang, ZHANG Qing-he, ZHAO Jun-hai.Analytical solutions of hydraulic tunnels considering strain softening, shear dilation and seepage[J]. Chinese Journal of Geotechnical Engineering, 2009, 31(12): 1941-1946. (in Chinese))
      [8]
      张小波, 赵光明, 孟祥瑞. 基于Drucker-Prager屈服准则的圆形巷道围岩弹塑性分析. 煤炭学报, 2013, 38(增刊1): 30-37.
      (ZHANG Xiao-bo, ZHAO Guang-ming, MENG Xiang-rui.Elastoplastic analysis of surrounding rock on circular roadway based on Drucker-Prager criterion[J]. Journal of China Coal Society, 2013, 38(S1): 30-37. (in Chinese))
      [9]
      冯强, 范金成, 张强, 等. 基于Mohr-Coulomb准则的球形洞室围岩应变软化弹塑性分析[J]. 煤炭学报, 2014, 39(5): 836-840.
      (FENG Qiang, FAN Jin-cheng, ZHANG Qiang, et al.Elastoplastic analysis of spherical cavity in strain-softening rock masses based on Mohr-Coulomb criterion[J]. Journal of China Coal Society, 2014, 39(5): 836-840. (in Chinese))
      [10]
      李荣建, 刘军定, 郑文, 等. 基于结构性黄土抗拉和抗剪特性的双线性强度及其应用[J]. 岩土工程学报, 2013, 35(增刊2): 247-252.
      (LI Rong-jian, LIU Jun-ding, ZHENG Wen, et al.A bilinear strength formula for structured loess based on tensile strength and shear strength and its application[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(S2): 247-252. (in Chinese))
    • Related Articles

      [1]WANG Haiyang, CHEN Pingshan, HE Liping. Model tests on consolidation of soft foundation by deep cement mixing method[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S1): 170-174. DOI: 10.11779/CJGE2024S10023
      [2]LI Guowei, ZHAO Xingyu, ZHANG Liming, ZHOU Yang, XIONG Li, HE Xinrong. Model tests on deep soft ground improvement of existing sand-filled subgrade with squeezed branch piles[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(8): 1768-1775. DOI: 10.11779/CJGE20230277
      [3]JIANG Zong-bin, JIANG An-nan, SHI Jing. Subgrade settlement using CFG piles based on cvisc creep model[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 346-351.
      [4]ZHANG Tao, CAI Guo-jun, LIU Song-yu. Settlement prediction of soft ground based on Weibull model[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 212-216.
      [5]WANG Liang-liang, YANG Guo-lin. Model tests on static and dynamic performances of cut subgrade of railways in medium-strong expensive soil area[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(1): 137-143.
      [6]BIAN Xue-cheng, JIANG Hong-guang, JIN Wan-feng, JIANG Jian-qun, CHEN Ren-peng, CHEN Yun-min. Full-scale model tests on slab track-subgrade interaction and load transfer in track system[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(8): 1488-1495.
      [7]XUE Xiang, SONG Lian-liang, JIA Liang, LE Yuan, GE Hong. New prediction method for post-construction settlement of soft-soil roadbed of expressway[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 125-130.
      [8]XIE Hongshuai, ZAI Jinzhang, LIU Qinghua. Mechanism of improving soft clay ground by the combined-method of vacuum dewatering and preloading[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(1): 119-121.
      [9]ZHAO Jiuzhai. Research on settlement of soft clay ground in Lianyungang[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(6): 643-649.
      [10]Shen Zhujiang, Yi Jindong. Comparison of Models in Deformation Analysis of Beach Soft Ground under Embankment[J]. Chinese Journal of Geotechnical Engineering, 1987, 6(6): 39-45.

    Catalog

      Article views (255) PDF downloads (102) Cited by()
      Related

      /

      DownLoad:  Full-Size Img  PowerPoint
      Return
      Return